I'm dabbling with regression (In excel), but I'm stuck because my residual plot is not normal. I have 2 variables: age, and gender(0 or 1). I regress it in excel and also plot the residuals, it is not random. In general, how do I solve this issue?(adsbygoogle = window.adsbygoogle || []).push({});

If it matters, the result of my raw when looks like a curve. It curves up and slowly curves back down(imagine a sine function that goes from 0 to pi)

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# I Residuals are not 'random' -- How do I resolve?

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